[systemd-devel] Bouncing interface once chrony is synced

[Julian Andres Klode]

On Wed, Jul 05, 2017 at 10:29:21AM -0500, Ian Pilcher wrote:
> I am using CentOS 7 (systemd 219) on a Banana Pi as my residential
> firewall/gateway.  The Banana Pi does not have a persistent clock, so
> it has no idea what the time is until it is able to sync via NTP.  Thus,
> the initial DHCP leases that the BPi receives have incorrect expiration/
> renewal times (since the system can't sync via NTP before it has an IP
> address - chicken and egg).

Can't you just store the time on shutdown and restore it at boot (e.g.,
take the time of the journal file) - that is usually close enough, at
least it works well enough for use cases in openwrt and lede.

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